Armature for dynamo-electric machines.



No. 677,392. y I Patented July 2, I901. v

I C'. DE W. ANDERSON;

. ABIATUBE FOB- DYNAIO ELECTRIC MACHINES.

(Application filed Aug. 27, 1900.)

(No Iodol.

nn W I a. a THE nouns PEYIZR! 1:0,. PNoTO-LHNO.. vlmmowu I UNITED STATES PATENT OFFICE,

CHARLES DE WITT ANDERSON, OF CHICAGO, ILLINOIS.

ARMATURE FOR DYNAMO ELECTRIC MACHINES.

sPEcIFIoATIoN forming part of Letters Patent No. 677,392, dated July 2, 1901. Application filed August 27, 1900. Serial-No. 28,154. on model.)

To all whom it may concern.-

Be it known that I, CHARLES DE WITT AN- DEBS ON, a citizenof the United States, residing at Chicago, in the'countyof Cook and State of Illinois, have invented certain new and useful Improvements in Armatures for Dynamo-Electric Machines,'of which thefollowing is a specification.

In the accompanying drawings, which are made a part of this specification, Figure 1 is an axial section of an armature embodying;

the invention and of a portion of the casing therefor, a portion of the armature-shaft being shown in elevation. Fig. .2'is a transverse section thereof on the line 2 2, Fig. 1,

nearly all of the coils and the insulators by which they are separated from the core being omitted. .Fig. 3 is a face view of a stamped sheet-metal ring that may be used in the construction of the armature-core where it isdesired that the armature shall have overhanging ends projecting beyond the centrally located support or spider.

The ring or core proper and the spider or equivalent means for supporting it are in accordance with the present invention made up of a number of stamped sheet-metal disks 1, such as shown in Fig. 2;t0 which may be added, if desired, a number of stamped sheetnetal rings 2, such as shown in Fig. 3. Each of the disks 1 has in its periphery radial notches 3 and has also perforations or openings 4, corresponding'in Width and radial disposition with the notches 3 and arranged in a circular series concentricwith the disk, the disk being provided with a central opening adapted to receive the armatu re-shaft or,preferably, a sleeve 5, secured to it. That portion of the disk lying within the circular series of openings at is preferably provided with openings 6, which reduce it in form to two concentric rings 7 and 8, connected by radial arms 9. That portion of the disk lying between the notches 3 and the circular series of openings 4: is provided with equidistant perforations for the passage of tie-bolts 10, and that portion lying within the circular series of openings is provided withiequidistant per-' forations for the passage oftie-bolts 1l.- I

In order to build up an armature-core and spider of stampings having the features above described, the desired number of them is assembled so that the notches 3 and openings 4 register, thus forming a composite or lami nated diskor cylinder havingin its periphery a number of longitudinal grooves resulting from the notches 3 and having through it a number of longitudinal openingsor passages resulting from the openingsd. The disks are preferably'assernbled on the sleeve 5, which has at one end a radial flange 12,and onto this sleeve is slipped a ring 13, the flange 12 and ringl3 being provided with properly-disposed openings for the reception of the tie-bolts 11, by which the flange 12 and ring 13 are drawn together, so as to firmly clamp and hold together the central portions of the several disks. In order to still more securely hold the parts together, and especially to prevent the bolts 11 from working loose, the sleeve is threaded, and onto this threaded portion is turned a nut 14,1ofsuificient diameter to overlap the heads of the bolts which are countersunk in the ring 13.

If desired, the entire core from end to end may be made up of disks, suchas shown in Fig. 2,but'.I prefer to use in connection with them a number of rings, such as shown in Fig. .3. Each of these rings is provided in its periphery with a series of notches 15, corresponding in size and radial disposition with the notches 3, and is provided also in its in-' her margin with a number of notches 16, corresponding in width and radial disposition with the openings 4:. Where it is desired to extend the core longitudinally beyond the spider resulting from those portions of the disks 1 that lie within the circular series of openings 4, the appropriate number of rings 2 are assembled upon each side of the spider, so'that their notches 15 and 16 register with the notches 3 and openings respectively. The core being. thus buil'tnp to the desired longitudinal extent rings 17 and 18 are placed against the outermost rings 2, and the tie-bolts 10 are passed through the disks 1 and rings 2, the latter being provided with perforations 19 for receiving them. Preferably the bolts'lO pass freely through perforations in the ringl7 and are threaded into the ring 18, the threaded end of the bolt being dressed off so that it does not project beyond the outer surface of the ring 18, the heads of the bolts being counters-unk in the ring 17, so as not to interfere with thewinding. In the peripheral grooves of the core thus constructed areplaced 1nmay be madeof any suitable insulating m excepting as they are Each of pendent of every other,

related through the commutator.

these coils consists. of asingle length otin'sui- V 'centric with the d sk, a central opening, and

openings .betweensald central'openrng and lated metallic ribbon wound the necessary number of times around the core and hav-i-n-, z; projecting ends of sufficient length to form the commutatorconneetions. In winding-this coil the ribbon is startedatthe ring 18-fand;'t laid along. the groove to the opposite end. thereof, at which point itsend} is inserted through the corresponding passage. resulting from the openings 4 and notches 16,. returnin'g tozthe'starting point and repeating .this.1 operation until the winding is complete, At the commencement of the second convolution or layer the. first laid end of the ribbon twisted-, so.as to bringit toone side, of: the coil and allow .the other layers or .conyolu,-;

tions to. belaid :fiat one upon another.

For thepurpose of preventing oilzfromthew arlnatureishaftfrom getting onto. the coils, a cup-shaped shield 23. is securedto. the arrna-1. ture by means of the bolts ll-andhuts 2a.

turned-onto them, the bolts being. made of. sufficientlength to pass: through threaded Op ningSJn-t e flange-12f and: also th ough a it provides ample ventilation-andenables the journal-box 2.60f the armature-shaft to. be

shaft of minimum length.

What I-claiinas new, and desireto secure.

by Letters Patent, is-- 1f. An element for usein the; construction I its'periphery a number; of. notches and havlng-alsora' number of openings. arranged infa :gireuglar series concentric with its axis and;

number of openings corresponding in width.

and radial-disposition with said-n,otches,.sub-. stantially as set forth.

4:. An element for use 111: the construction a rial, such as-mica, micanite, orpack-ing. The

core is then ready for the reception of the coils 22, each of which is entirely separate and indeflange 2,5 of the shield 23. This overhanging form of the armature is advantageousi-nthatv projectedinward, thus enabling the useof ofiarrnatures consisting of a diskchaving in.

the constructionerinatnres co g o diskhavin a central opening, a-number of openingsarranged equidistant in a circular series concentric with saidrcentral opening, and a number ofequidistant peripheral notches corresp nd ng, n idth and rad disp i ion i the openings of the circular series aforesaid,

substantially asset forth.

5. An element for use in the construction of armatures consisting of a disk having a series of peripheral "notches, a number of- ,openings. arranged in a circular series conthe circular Ser O p ings, substantially ;-,a's set forth. I i

and a. spider supporting; it, said. corej-.&nd1

number of similar disks. eachhaving a numb Q per pheraljnotches: an annrnber of openings arranged inazcin -;-spide r comprising cular series concentricfiyith the' disk corre x jwithsaid.- notc es, means or-secur ng I :eairl is s tosethenso. th t. thesp i pheral ches. and: henpeninge giste -,1.snhstan-z esponding in number and; radial disposition tial1yasset,forth;.I v 7,- n; armature. having aminated. .core.

Qanda spider for: supporting the core said m erofidzisks,

istant peripjli: 1

;-.co and. spide comp s n na 1- i ech harinsannmbe of qn. :e al n tche and a num e fpe gs c i e pend g. in idth and radial-disposition:

with said notches, and. neane r securing f: the; severa diskstegether ,so hat the notches 53nd p n ng register, sub tantiallyaslset fort'h,v I 1 e a j 8. An armature haying a laminated core 'ze mpr -i g a nn nberof: d sks, eachharing in nnmbe peripheral otc es-and annnn ibe 0 op ninge a ange a circular'seriee ie ncentr cwi h he disk, mea s for secur ng:

sai,d;' disks together with their notches. and iopenings registering-s0 that the notches for-m; glongitudinal; grooves. in the. periphery ofthe core an e op ni gs formlongitn inal nassages through thecore, and coils-wound lon gitud-inallythrough the g-roovesandpassages, substantially asaset forth.

1 9. An. armature having a laminated core qomprising a number 0t disks, each having %,a nnmber'ofperiphe al notches-and anum-i gbe-r of openings arranged in a circular. series ;concentric with: the disk, and corresponding gin. number andradial disposition/with sai jnotches, means-for securing said disks to gether with their notches and openingsrege ;i'stering so that the notchesforln longitudignalgrooves in the periphery of the core and; the openings form longitudinal passages gthrough the core, and coils wound longitudi nally through the. grooves and. passages, sub Estant-ially asset forth.

10. An armatnrehaving alaminated' core .;made up of anumber otdisksand anumber 1 of rings, each of the; disks having in itspeiriphery a number of notches and having also.

a number of openings arranged in a circular series concentric with the disk and each of the'rings having a number of peripheral notches corresponding with the peripheral notches of the disks, means for securing said disks and rings together so that their peripheral notches register and form longitudinal grooves in the core, the ringsbeing arranged upon both sides of the disks, and coils wound longitudinally through said grooves and openings, substantially as set forth.

11. Anarmature havinga laminated core comprising a number of disks and a number of rings, each of the disks having a number of peripheral notches and a number of openingsarranged in a circular series concentric with the disk, and each of the rings having in its periphery a number of notches. corresponding with the notches of the disksand in its inner margin a numberof notches corresponding with the openings of the disks,

- means for securing said disks and rings to I gether so that the peripheral notches register and form longitudinal grooves in the periphery of the core, while the openings register and form longitudinal passages through the core, and coils Wound longitudinally through the grooves and passages, substantially as set forth. v V I 12. An armature having a'core and a support therefor, comprising a number of disks,.

each having a seriesof equidistantperipheral notches and a circular'series of openings corresponding in width and radial disposition with the notches, a series of rings disposed upon both faces of the assembled disks, each of said rings having a series of peripheral notches corresponding in width and radial disposition with the peripheralnotches of the disks and having also in its inner margin a series of notches corresponding in width and radial disposition with the openings of the disks, andmeans for securing the disks and rings together, substantially as set forth.

13. An armature having a core and a support therefor, the core being extended at both ends beyond said support, and a cup-shaped shield located within one of the overhanging ends of the core and projecting beyond said end, substantially as set forth.

14. An armature having the sleeve 5, a number of disks 1, each having a central opening in which said sleeve 'fits and each having a number of peripheral notches and a number of openings corresponding in width and radial disposition with said notches, said disks being arranged with their similar features registering, means for securing the disks to the sleeve 5, a number of rings 2 hav ing notches l5 and 16 registering With the notches and openings aforesaid of the disks,

and means for securing the disks and rings together, substantially as set forth.

' CHARLES DE WlT'l ANDERSON.

-Witnesses: I

J. HENRY LEWIS, L. M. HOPKINS. 

